Hydropneumatic engine



(No Model.) 2 Sheets-Sheet l. L. KESSLER.

- HYDROPNEUMATIO ENGINE.

No. 451,824. Patented May 5,1891.

(No Model.) 2 Sheets-Sheet 2.

L. KESSLER. HYDROPNEUMATIG ENGINE. No. 451,824. Patented May 5,1891.

w @Zg. 2

0-7 I I I 1 i I II E W II I w 1 Z 11, ll u I c 0 2 I T| f 11 1 :1'21 H Y I? 1 11 ii M X/M11: Mme/WW:

UNITED STATES PATENT OFFTCE.

LOUI KESSLER, OF DES MOINES, IOWA, ASSIGNOR OF ONE-HALE'TO FRED HARBACH, OF SAME PLACE.

HYDROPNEUMATIC ENGINE.

SPECIFICATION forming part of Letters Patent No. 451,824, dated May 5, 1891.

Application filed June 1% 1890.

To all whom it may concern:

Be it known that I, LoUI KEssLER, a citizen of Germ any, and a resident of Des Moines, in the county of Polk and State of Iowa, have invented a new and useful Improvement in a I-lydropneumatic Engine, of which the following is a specification.

My improvement relates to the engine for which the United States Patent No. 368,952 was issued to me August 30, 1887; and the object thereof is to hasten condensation of steam and to increase the power and speed without an increase of fuel and expense in the oper: ation of the engine.

My invention consists in the construction and combination of tubes and valves with the condenser and the pump, as hereinafter set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which Figure 1 is a side view of my complete engine, and Fig. 2 an enlarged View of the condenser and pump and the tubes and'valves combined therewith.

A represents the condenser that incloses the steam-cylinder, and B is a single-acting lift-pump that has an outlet B at its top.

0 is an induction-tube, through which cold water is drawn from a reservoir or other source of supply into the annular chamber of the condenser that surrounds the steam-cylinder.

. dis an induction-tube, through which the water iswithdrawn from the pump and forced into the steam-cylinder, in the same manner as Serial No. 3551799. (No model.)

shown and described in my prior patent re= ferred to, when the valve in said tube is open.

f is a tube connected with the top portion of the cylinder and also with the bottom portion.

g is a tube connected with the central portion of the tube f and the bottom portion of the pump.

1 is a valve in the top portion of the tube f, and 2 a valve in the lower portion of the same tube. By thus connecting a tube with the bottom and top of the condenser and the pump the cold water that enters the condenser through the tube 0 will be more speedily circulated, as required, to produce a more rapid condensation of the steam within the cylinder. Heretofore the water was all discharged from near the top of the condenser and was warmed in the lower portion of the condenser by the radiation of heat from the steam in the cylinder, and consequently was not as active in circulation and in condensing the steam asit is when discharged simultaneously from the upper and lower portions of the cylinder by means of the tubes f and g.

I claim as my invention In a hydropneumatic engine having a condenser surrounding the cylinder, the pump B, the tubes d,f, and g, and valves 1 and 2, arranged and combined substantially as shown and described, for the purposes stated.

LOUI KESSLER. Witnesses:

F. HARBACH, THOMAS G. ORWIG. 

